Artículos de revistas
A dipolar self-induced bosonic Josephson junction
Fecha
2011-04Registro en:
Abad, M.; Guilleumas, M.; Mayol, R.; Pi, M.; Jezek, Dora Marta; A dipolar self-induced bosonic Josephson junction; Europhysics Letters; Europhysics Letters; 94; 1; 4-2011; 100041-100046
0295-5075
CONICET Digital
CONICET
Autor
Abad, M.
Guilleumas, M.
Mayol, R.
Pi, M.
Jezek, Dora Marta
Resumen
We propose a new scheme for observing Josephson oscillations and macroscopic quantum self-trapping in a toroidally confined Bose-Einstein condensate: a dipolar self-induced Josephson junction. Polarizing the atoms perpendicularly to the trap symmetry axis, an effective ring-shaped, double-well potential is achieved which is induced by the dipolar interaction. By numerically solving the three-dimensional time-dependent Gross-Pitaevskii equation we show that coherent tunneling phenomena such as Josephson oscillations and quantum self-trapping can take place. The dynamics in the self-induced junction can be qualitatively described by a two-mode model taking into account both s-wave and dipolar interactions. © 2011 Europhysics Letters Association.